Paper-making machine



Nov. 19, 1929. G. H. HARVEY PAPER MAKING MACHINE 2 Sheets-Sheet Filed Aug. 9, 1926 Nov. 19, 1929. G. H. HARVEY PAPER MAKING MACHINE Filed Aug. 9, 192e 2 sneeis-sheet 2 @14 MQM+GQL Patented Nov. 19, 1929 UNITED STATES PATENT OFFICE GEORGE H. HARVEY, OF MIDDLETOWN, OHIO, ASSIGNOR TO THE IBLACK-CLAITSON-l COMPANY, OF HAMILTON, OHIO, A CORPORATION OF OHIO I l PAPER-MARIN G MACHINE Application led August 9, 1926. ASerial No. 128,010.

This invention relates to paper-making machinery, and more particularly to papermaking machinery used in the formation of a web or sheet of paper from the, paper stock, wherein paper-forming parts are supported between side frames, which forming parts may be provided with and carry an endless conveyor, such as an endless felt, or the like.

One of the principal objects of this invention is to provide a paper-making Irnachine of this character having supporting frames and paper-forming part-s carried by said frames, which is so constructed as to permit ready assembly or removal of the paperforming parts.

Another object of this invention is to provide a paper-making machine of this charaacter having stationary framles for supporting the paper-forming parts, which frames are so constructed as to permit movement of the paper-forming parts into or out of the space intermediate said frames through one of said fra-mes.

Other objects and advantages of this invention will be apparent from the following description when taken in connection with the accompanying drawing.

In the drawing in which like characters of reference designate like part-s throughout the several views thereof,

Fig. l is a side elevation of a paper-making machine constructed in accordance with this invention;

Fig. 2 is a plan view with certain parts in section of the stationary frames and an associated paper-forming part removed from the space intermediate said frames;

Fig. 3 is a front elevation of the paperforming part shown in Fig. 2, showing the trucks for supporting said paper-forming part for movemient into or out of the space between the frames; and

Fig. 4 is a vertical sectional view on the line 1- 41: of Fig. 3, certain parts being broken away to show the construction thereof.

In paper-making machinery designed to form a web or sheet of paper from the paper stock, side frames are usually .provided 'which support the paper-forming parts in operative position therebetween. Such paper-formlng parts may include in the case of a pressing machine, which is customarily positioned lmmediately after the F ourdrinier so that the web from the delivery end of the F our- 55 drinier is fed to the first press, an upper press roll, a lower press roll, and the .like. For purposes of easy description, the expression paper-forming part is used throughout this application to denote any mechanism-'s0 associated with paper-making machinery of this character which is disposed intermediyate side frames in operative position to aid in the manufacture of paper. l

As is well known in the paper-making art; :155 paper-forming parts are often of large size and considerable weight, suchthat much difficulty is experienced in their assembly and disassembly. In paper-making machines as heretofore constructed the disassembly, changing, and assembly of the paper-forming parts is a difficult and tedious task, even for men experienced with their particular machines, and much time is consumed in such procedure due to no adequate provisions be^75 ing made by the manufacturers of papermaking machinery for such occurrences.

` This invention provides means for overcoming these objections, by providing a papermaking machine so constructed as to facili-" tate the assembly and disassembly of the parts.

In the operation of a pressing machine, it is found desirable to remove the soft-surfaced roll of each press from the press and'v regrind the surface of the roll. The bottom roll of a press is usually the soft-surfaced roll, being faced with rubber or the like, and this roll may be in some cases removed from the press at intervals as frequent as thirty days. This invention is particularly adapted to facilitate the removal of the press rolls for such regrinding or for other purposes; and to facilitate their assembly or installa-` tion. f

In the drawing this invention is illustrated as applied to a pressing machine, but vit is to be understood that the invention is applicable to other types of machines wherein paper-AA 1100 forming parts are supported in operative position intermediate side frames.

Referring to the drawing, Figfl illustrates a pressing machine equipped with three presses designated 10, 11 and 12 respectively. rlfhe number and arrangement of the presses in such a machine is immaterial, as it is apparent that any number and relative arrangement of presses could be provided in accordance'with this invention. 'llhe construction of the first press 1.0 is not disclosed in its entiretyin the drawing, as it is the same in construction and arrangement as the press 11 which is fully illustrated. Eachpress consists essentially of an upper press roll 15 and a lower press roll 16. rllhese rolls are of entirely conventional construction, the upper roll being preferably hard-surfaced and constructed of granite or brass and the lower roll being soft-surfaced having a facing of rubber. ln-the manufacture of paper when such a machine is assembled and in use, the web from the delivery end of the Fourdrinier is transferred onto an endless carrier felt 2O associated with the first wet press 10, which felt carries the web thus supported through the nip 21 of the press. rlhe felt 20 is provided with a plurality of carrying and supporting pulleys, some of which designated 24 are located within the felt, and others designated 25 are positioned without the felt. A tensioning arrangement 27 is provided for each endless felt. The construction of such tensioning arrangement is not illustrated, as this is entirely conventional and forms no part of the'invention. les shown diagrammatically the tensioning arrangement is provided with.

a tensioning pulley 28 carrying the endless felt, which pulleys is supported in a bearing carriage which. is adapted to ride up and down on a supporting arm 29 to thus vary the tension of the felt.' rll`he movement of the bearing carriage may be obtained by means of a screw threadedly contained by said carriage, so that turning of the screw effects movement of the carriage longitudinally of the screw. For conveniently controlling the tensioning arrangement a hand wheel 30 is provided at the side of the machine, said hand wheel being rigidly fastened on a shaft 31 having a pulley or sprocket wheel 32 which in turn carries a belt or chain 33 cooperating with a second lpulley 84 on a shaft 35 associated with the tensioning arrangement. 'lhis latter shaft may be provided with a worm which meshes with a pinion on the upper end of the screw, the construction being such that rotation of the hand wheel 30 effects movement of the pulley 28 longitudinally of the arm 29 tovary the tension in the felt.

Aft-er passing through the first press, the web of paper is transferred from the felt 2O to an endless felt 40, which carries the web thus supported lthrough the second press.

yllliis felt is also provided with a plurality mecano of carrying and supporting pulleys 2l and 25, and a tensioning pulley 28 associated with tensioning arrangement 27 in a manner similar to the felt 20.

After passing through the second wet press the web is carried by the felt 40 down beneath the third press 12, and is removed -from this felt and carried and supported by pulleys 45 and 46 which deliver the web to the side of the press 12 opposite to that at which the web was delivered at the presses 10 and 11. 'lhe construction is such that the welois turned vover before passing through the third press,

in order to partiallyv equalize the pressing effect upon the two sides of the web to give the two sides as nearly the same appearance as possible. A third endless felt 50 is provided for receiving the web just before it enters the nip 51 of the third press. 'llhis felt is likewise provided with carrying and supporting pulleys 24 and 25 and a tensioning pulley 28 associated with a tensioning arrangement 27. 'llhe web is removed from this felt at 53, and then is carried in the direction as shown by the arrow to further treating devices such as additional presses or driers. 'llhis arrangement is conventional and well known in the art, and is described to aid in the understanding of the construction and operation of the machine embodying this invention.

rlhe paper-forming parts of this machine are supported in operative position by means of two side frames designated in Fig. 2 as A and B respectively. ln this embodiment of the invention these' side frames are made stationary, being bolted to the foundation. ln accordance with this invention one of these side frames is provided with an openingor break through which the paper-forming parts may be readily removed or inserted. When such a machine is set up in the plant the driving machinery for driving the. paper-forming parts is usually located on one side of the machine called the drive side. rlhe other side of the machine, which is ordinarily left free of any driving machinery or other obstructions, and from which the operators supervise the operation of the machine is called the front side. lt is obvious that it is more convenient to provide the opening in that side frame which is on the front side of the machine. ln Fig. 2 the side frame B is located on the drive side of the machine` while the side frame A is located on the front side of the machine, which latter side is the side illustrated in Fig. 1. The side frame A is provided with a plurality of openings or interruptions designated 60, which openings cooperate with the respective presses of themachine. ln the machine illustrated Aone opening is provided for each press. `This opening is so associated with its respective pressthat either of the press rolls can be readily removed from operative position and withdrawn from the space between the side frames -tive presses, each opening being of sufficient width to permit the rolls as well as a supporting means for the rolls to be moved back and forth through the opening.

The construction of each of the presses is similar, so a. description of one of the presses will suffice for all. By providing the openingor interruption in the frame, two sup# porting standards 62 and 63-re1nain, one on each side of the opening. Each of these supporting standards has a groove or seat 64 adapted to receive a removable block 65 which carries a bearing standard 66 providing a bearing 67 for one end of the shaft 68 of .the lower press roll 16. The frame B as shown in Fig. 2, is provided with a bearing 70 adapted to receive the opposite end of the shaft 68 of the lower press roll. The removable block and bearing carried thereby are so positioned and constructed as to support the shaft in alignment with the bearing 70. Each bearing is provided with a removable cap 69. The upper press roll 15 is provided with a so-called lever7 support. Each frame (A and B) has an upper standard 7 5 which carries an arm or lever 76 pivoted at` 77 to the standard. At one side of the -pivot 77 a bearing 80 is formed in each of thelevers, within which the shaft 81 of the upper press roll is journaled. Each bearing 80 is also v provided with a removable cap 82. The opposite end of the lever is bifurcated as shown at 87, a rod 88 being carried Within the groove so formed. The rod 88 is associated with a ratchet and screw device illustrated diagrammatically at 89, said latter device being provided with a hand lever 90, by means of which the upper press roll may be moved up or down about the pivots 77 to vary its position rela. tive to the lower press roll. By this means the pressure at the nip of the rolls can be conveniently controlled, and also the upper press roll may be readily raised out of contact with the lower press roll or both rolls may be strapped together and raised and lowl ered by the ratchet device as will be presently described. The bearing end of the lever 7 5 is provided with a weighting mechanism for maintaining a definite pressure of contact at the nip of the press rolls. This weighting mechanism is shownas comprising a rod 95 fastened at one end to the lever 75, and connected at the other end by means of a hookand-eye connection 96 to a rod 97 pivoted on a lever 98, which lever carries an adjusting weight 99. In Fig. 1 the parts are shown. in operative position with the weighted arm 98 disposed horizontally across the opening60, the construction serving to exert a constant pull on the end of the lever 7 5 to maintain a constant pressure at the nip of the press rolls.

A doctor 91 is associated with the upper press roll, the doctor feeding the stock scraped from the roll into a trough 92.' The side frames are provided withthe usual supports 55 which carry va plank or walk-way 56 and hand-rail 57 topermit the operator to effectively supervise the machine. The side frames are also equipped with steps or foot rests 58 'for the g same purpose.

In this embodiment of the invention, the lower press roll, .which is softfsurfaced, is made removable and means is provided for transporting this roll through the opening 60 in the side frame to the exterior of themachine. Obviously either the upper press roll or lower press roll could be made removable, or both made removable-in .accordance .withv this invention. Y

Positioned beneath each press. and extending through the opening 60 of the frame A. is a track 100. This track comprises two rows of rail-supporting. plates 101 which are bolted to the foundation` each row having a rail 102 fastened thereto by screws 103. It is not essential that this track be carried by the foundation, or that the .opening 60 extend to the foundation, as the track may be carried in any convenient way below the press rolls. Obviously one of the most convenient ways of supporting the track is on the foundation. Also it is not essential that the tracks 100 and the openings 60 be disposed directly under or opposite the respective presser. A coop- 4 erating opening and track can be provided either in advance or behind the press at any roll, and to support the same during movement away from its operative position. Two supporting trucks are shown, one for each end of the press roll, but obviously any con-` venient number can be used. Any suitable 4form of truck can be used, but one that has proven entirely satisfactory for this purpose is disclosed herein.

The construction of this truck is particularly illustrated in Fig. 4. The truck is provided with a supporting frame 110, which has an upper surface 111 corresponding in curvature to the curvature of the press roll.` Carried by the upper surface 111 and fas tened thereto in any suitable manner is a plurality of wooden blocks or strips 112, these blocks serving to prevent injury to the roll and to firmly support the same thereon.

vio

Each truck is provided at its lower end with two axle-supporting arms 115 and 116 carrying respectively axles 117 and 118. Mounted upon each axle is a wheel structure 120 provided with two grooves 121 and 122 which cooperate respectively with the two rails ot the track 100. Positioned between the axle and the wheel structure is a plurality or sets or" roller bearings 123 having suitable spacers 124 between them to hold each bearing set in adjusted position. Each end of the axle has a lubricating passage 125 formed wth a grease cup 126 at its outer end. The construction provides a freely movable truck, which can be easily moved back and forth upon its cooperating track when carrying the heavy press roll. v

With the machine assembled and in operation, when it is desired to disassemble one ot the presses and to remove the lower press roll the procedure is as follows:

The bearing caps 69 of each ol.2 the bearings of the lower press roll are removed. Metal straps, such as steel straps, are then looped over the projecting journals of the upper and lower press rolls at each end thereof. One of these metal straps is indicated at 130 in Fig. 1, being shown looped over the journals 68 and 81 ont the lower and upper press rolls respectively of the press 11. 'lhe lever 98 of the weighting mechanism for maintaining the pressure at the nip of the press rolls is then raised to non-operating position and the hook-and-eye connection 96 released. rlhe upper press roll 15 is next raised in its bearings in the lever 't' 5 by means of the yratchet and screw device 89. l`his takes up the slack in the steel straps, and then both the upper press roll 15 and the lower press roll 16 are raised together upon turther actuation oit the ratchet and screw device 89. lln this manner the lower press roll is raised completely out oit its bearings. 'lhe removable block carrying the bearing standard 66 is then removed. rlhis part is relatively small and can be easily handled. rlhe felt tensioning device 27 for the felt olj this press is so adjusted as to provide plenty of slack in the felt. '.lhe portion oi` the felt beneath the lower, press roll is then pulled out through the opening 60 and raised up over the end of the lower press roll. rlhe sup porting trucks 105 are pushed in through the opening 60 into position beneath the lower press roll. The ratchet and screw device 89 is then actuatedto lower both the upper and lower press rolls until the lower press roll comes to rest upon the supportingv trucks 105. rlhe metal straps are removed, and the lower press roll while supported on the trucks is pushed through the opening 60 to the exterior of the press. Upon assembly the procedure is just the reverse of that given above.

While the form oi ap )aratus herein. described constitutes a preterred embodiment nveaaeo oit the invention, it is tobe understood that the invention is not limited to this precise torni of apparatus, and that changes may he made therein without departing from the scope ot the invention which is dehned in the appended claims. l

What is claimed is:

1. ln a paper-making machine of the character described, side frames, a foundation supporting said frames, a paper-forming part normally supported in operative position by said side trames, one of said frames having an opening therein extending to said foundation, a track carried by said foundation extending through said opening to the exterior of the machine, and trucks running on said track and adapted to pass through said opening, said trucks being constructed to support said paper-forming part for withdrawal from and insertion, into the space intermediate said side r'ames.

2. A pressing arrangement of the character described comprisng an upper press roll, a lower press roll, side frames for normally supporting said press rolls in operative position, one of said trames having an opening therein, and means for moving a press roll through said opening out of or into the space between l'sai side frames.

3. A pressing arr ngement .of the character described comprising an upper press roll, a lower press roll, side frames for normally supporting said press rolls in operative position, one of said frames vhaving an opening therein, a track supported between said trames and extending throu h said opening to the exterior of the side frame, and trucks running on said track' adapted to pass through said opening, said trucks being constructed to support a press roll for withdrawal from and insertion into its operative position intermediate the side frames.

d.. A. pressing arrangement of the character described comprising an upper press roll,

Y a lower press roll, side frames for normally supporting said press rolls in operative position, one of said iframes having an opening therein, a track supported between said trames extendin through said opening to the exterior ot t e side trame, and a truck running on said track adapted to pass through said opening, said truck being constructed to support a press roll for withdrawal from. and insertion into its operative position intermediate the side trames, the contacting surface of said truck with the roll being provided with cushioning means to prevent injury to said roll.,

5. A pressing arrangement ot the character described comprising an upper press roll, a lower press roll, side .trames for normally supporting said press rolls in operative position, one of said trames having an open'- ing therein, a track supported between said iframes below said lower press roll and extending through said opening tothe exterior ,of the side frame, trucks running on said track adapted to pass through said openter described comprising an upperpress roll,

a lower press roll', side frames, a lever supported by each side frame, bearings carried by said levers in which the upper press roll is journaled, means for rocking saidv levers to raise or lowerv the upper press roll, a lower bearing in one of said frames for one end of the lower press roll, said other frame having an opening therein opposite said lastnamed bearing, a removable block positioned in said opening, a bearing carried by said removable block for the other end of the lower press roll, and means for moving said lower press roll through said openingv into or away from its operative position intermediate said frames when said removable block is removed. I

7. A pressing arrangement of the character described comprising an upper press roll, a lower press roll, a side frame on the drive side of said pressing arrangement, a second side frame on the front side of said pressing arrangement, said press rolls being supported in operative position by said frames, said frame on the front side having an opening therein a removable block positioned in said opening, and means for moving a press roll through said opening into or away :trom

its yoperative -position intermediate said frames when said removable block 1s removed.

8. A pressing arrangement of the character described comprising a plurality of presses,

each press having an upper press roll and a lower press roll, side frames for supporting the press rolls of said presses, one of said frames having a plurality of openings therein whereby a cooperating opening is provided for each press, and means for moving a press roll of each press into or out of the space intermediate said side frames through its cooperating opening.

9. In a paper-making machine of the character described, a side frame, comprising a stationary part having an opening therethrough and a readily removable partcarried by said stationary part, a paper-forming part normally supported in operative position by said removable part, and traveling transporting means :tor moving said paperforming part through the said opening formed in said frame when said removable part is removed.

l0. pressing arrangement of the character described, comprising an upper press roll, a lower press roll, side frames for supporting said press rolls in-operative position, one of saidside frames including a stationary part having an opening therethrough and a removable part, and traveling means for moving a press roll into or away from its operative position intermediate said frames through the opening formed in said frame when said removable part is removed.

11. A pressing arrangement of the character described, comprising an upper press `ro`ll, a lower press roll, side framesfor supporting said press rolls in operative position, one of said side frames having an opening therein, transporting means for said lower press roll adapted to move said roll through said opening into or out of the space between said side frames, said transporting means being adapted to be positioned beneath said lower press roll when the same is to be removed', and means for raising said lower press roll from its bearings and for lowering the same into position upon said transporting means.

12. A. pressing arrangement of the character described, comprising an upper press roll, a lower press roll, side Jframes for supporting said press rolls in operative position, one of said side frames having an opening therein, transporting means for said lower press roll adapted to move said roll through said opening into or out of the space between said side frames, said transporting means being adapted to be positionedv beneath said lower press roll when the same is to be removed, and m'eans tor adjusting the position of said upper press roll, said means being also adapted to raise said lower press roll from its bearings and to lower the same into position upon said transporting means.

13. A pressing arrangement of the character described, comprising an upper press roll, a lower press roll, side frames for supporting said press rolls in operative position, one of said side frames having an opening therein, transporting means for said lower press roll adapted to move said roll'through said opening into or out of the space between said side frames, said transporting means being adapted to be positioned beneath said lower press roll when the same is to be removed, means for raising and lowering said upper press roll in its bearings, and strap means for connecting said upper and lower press rolls together for simultaneous movement, the construction being such that said lower press roll is adapted to be raised from its bearings and lowered into position upon said transporting means by said raising and lowering means for the upper press roll.

14. A pressing arrangement of the charmeeste@ aeter described, comprising an upper press roll, s lower press roll, side frames, a lever supported by each side frame, bearings earried by said levers in which the upper press roll is journaled, bearings carried by said side frames in which the lower press roll is jour. na'led, one of said side frames having an open* ing therein, transporting means for said lower press roll adapted to move said w roll through said opening into or out of the space between said side frames, said transporting means being adapted to be positioned beneath said lower press roll when the same is to be removed, means for rocking said levers to raise and lower said upper press roll in its bearings, and strap, means adapted to be looped over the journals of said upper and lower press rolls at each end thereof, the oonstruction being such that said lowerwpress roll is adapted to be raised from its bearingsand lowered onto said transporting means by said raising'and lowering means for the upper press roll.

In testimony whereof l hereto ax my signature.

GEORGE H. HARVEY, 

